Decision making

have second thoughts

start having doubts about a decision you have made

change one's mind

(v) to change your decision, plan, or opinion about something

make a rash decision (about sth)

decide too quickly

make up one's mind

decide, choose.

keep one's options open

not make a final choice yet in order to have more possibilities

cross one's mind

occur to someone/ have a sudden idea

Keep/bear in mind

remember some information when making a decision about a matter

weigh up the pros and cons

consider the advantages and disadvantages

Wrap one's mind around

find a way to understand or accept (something)

give smth a lot of thought

think about something for a long time

be in two minds about sth

to have difficulty making a decision, be not sure what to choose

take into consideration

to keep something in mind when making a decision

think on one's feet

to make a quick decision or give an answer quickly